Materials Reminders

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# Materials Reminders - PowerPoint PPT Presentation

Materials Reminders. Get out your agenda if you see your name below. I would like to have you in my FLEX Wednesday. Musical Math. Determine whether the following polygons are similar . . 4. 4. 6. 6. 2. 3. Cornell Notes. Topic:. 4-7 Dilations. Essential Question(s):.

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Presentation Transcript

Materials

Reminders

Get out your agenda if you see your name below. I would like to have you in my FLEX Wednesday.

Musical Math

Determine whether the following polygons are similar.

4

4

6

6

2

3

Cornell Notes

Topic:

4-7 Dilations

Essential Question(s):

How do I graph dilations on a coordinate plane?

Important Vocabulary

Dilation– the image produced by enlarging or reducing a figure

Center– a fixed point used for measurement when altering the size of an image

Questions:

Notes:

Cornell Notes

How do I find the coordinates for a new, dilated figure?

Complete the following table by substituting the scale factor for the variable, a.

hint: just multiply all of the coordinates by the scale factor

Drawing Dilations

• Use the provided graph paper to draw dilations of the provided figures.

Graphing Dilations

• Use the provided graph paper to draw dilations of the provided figures.

Questions:

Notes:

Cornell Notes

How do I find and classify a scale factor?

Steps

Write a ratio of the x or y-coordinate of one vertex of the dilation (NEW figure) to the x or y-coordinate of the original (OLD) figure.

Example:

The Scale Factor is 3

If the scale factor is greater than one the dilation is and ENLARGEMENT

If the scale factor is less than one the dilation is a REDUCTION

### Homework

Page 228-229; 7-16 and 20

AND Cornell Notes Summary